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@ 2019-09-01T05:23:30Z

<?php
$a = Array
(
    '0' => Array
        (
            'name' => 'Viettel',
            'data' => Array
                (
                    '0' => '1559881644000,500'
                )

        ),

    '1' => Array
        (
            'name' => 'FPT',
            'data' => Array
                (
                    '0' => '1559994465000,172'
                )

        ),

    '2' => Array
        (
            'name' => 'MobiFone',
            'data' => Array
                (
                    '0' => '1559997314000,11164'
                )

        ),

    '3' => Array
        (
            'name' => 'Vietnamobile',
            'data' => Array
                (
                    '0' => '1559993699000,1246'
                )

        ),

    '4' => Array
        (
            'name' => 'Viettel',
            'data' => Array
                (
                    '0' => '1560000096000,47886'
                )

        ),

    '5' => Array
        (
            'name' => 'VinaPhone',
            'data' => Array
                (
                    '0' => '1559997553000,11132'
                )

        ),

    '6' => Array
        (
            'name' => 'VNPT',
            'data' => Array
                (
                    '0' => '1559993066000,84'
                )

        )

);
$groupBy = [];
foreach($a as $v){
	array_key_exists($v['name'], $groupBy) ? 
		array_push($groupBy[$v['name']]['data'], $v['data'][0])
	:
		($groupBy[$v['name']] = $v)
	;
}
echo '<pre>';
print_r(array_values($groupBy));

Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12: <pre>Array ( [0] => Array ( [name] => Viettel [data] => Array ( [0] => 1559881644000,500 [1] => 1560000096000,47886 ) ) [1] => Array ( [name] => FPT [data] => Array ( [0] => 1559994465000,172 ) ) [2] => Array ( [name] => MobiFone [data] => Array ( [0] => 1559997314000,11164 ) ) [3] => Array ( [name] => Vietnamobile [data] => Array ( [0] => 1559993699000,1246 ) ) [4] => Array ( [name] => VinaPhone [data] => Array ( [0] => 1559997553000,11132 ) ) [5] => Array ( [name] => VNPT [data] => Array ( [0] => 1559993066000,84 ) ) )

preferences:dark modelive previewkey bindings

103.12 ms | 411 KiB | 5 Q